$54+ Cheap flights from Boise (BOI) to Colorado
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Colorado with Cheapflights
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Cheapest flights from Boise to ColoradoExplore the most affordable flight options available from Boise to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.
Explore the most affordable flight options available from Boise to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Sun 9/2010:30 pm
DEN
- BOI
1 stop16h 27m
Frontier
Deal found 7/22![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Thu 8/277:30 am
DEN
- BOI
1 stop8h 58m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$202
This Priceline deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:23 pm
BOI
- DEN
1 stop5h 17m
Multiple Airlines
Tue 8/1810:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$203
This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:23 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Sun 10/189:19 am
DEN
- BOI
Nonstop2h 09m
Frontier
Deal found 7/22![Frontier logo]()
$204
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1310:50 am
BOI
- DEN
1 stop7h 55m
Southwest
Sat 8/159:05 am
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/21![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:50 am
BOI
- DEN
2 stops9h 20m
Southwest
Mon 8/248:40 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/22![Southwest logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:52 pm
BOI
- DEN
1 stop12h 00m
Frontier
Sat 9/1210:30 pm
DEN
- BOI
1 stop16h 27m
Frontier
Deal found 7/18![Frontier logo]()
$216
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/134:35 pm
BOI
- DEN
1 stop7h 24m
Alaska Airlines
Sat 8/156:02 am
DEN
- BOI
1 stop6h 45m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$217
This Frontier deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 8/910:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/19![Frontier logo]()
$218
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:45 pm
BOI
- DEN
1 stop7h 25m
Southwest
Tue 8/182:00 pm
DEN
- BOI
2 stops8h 25m
Southwest
Deal found 7/22![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Tue 8/182:00 pm
DEN
- BOI
2 stops8h 25m
Southwest
Deal found 7/21![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:25 pm
BOI
- COS
1 stop6h 15m
Southwest
Mon 9/144:20 pm
COS
- BOI
1 stop6h 20m
Southwest
Deal found 7/22![Southwest logo]()
$303
Best flights from Boise to ColoradoDiscover carefully curated flight deals from Boise to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from Boise to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Tue 8/181:05 pm
DEN
- BOI
2 stops9h 10m
Southwest
Deal found 7/22![Southwest logo]()
$223
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:00 pm
BOI
- DEN
1 stop14h 33m
Alaska Airlines
Tue 8/187:05 pm
DEN
- BOI
1 stop4h 43m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:00 am
BOI
- DEN
Nonstop2h 10m
United Airlines
Mon 8/317:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Deal found 7/21![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:12 am
BOI
- COS
1 stop6h 24m
Delta
Sun 8/166:16 pm
COS
- BOI
1 stop5h 43m
Delta
Deal found 7/20![Delta logo]()
$394
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Tue 8/189:05 am
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/22![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:44 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Fri 8/217:37 pm
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 7/19![United Airlines logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:00 pm
BOI
- DEN
1 stop14h 33m
Alaska Airlines
Tue 8/187:05 pm
DEN
- BOI
1 stop4h 43m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$294
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Mon 9/76:25 am
DEN
- BOI
1 stop6h 50m
Southwest
Deal found 7/22![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:44 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Mon 8/247:37 pm
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 7/19![United Airlines logo]()
$290
This Alaska Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:32 pm
BOI
- DEN
2 stops10h 24m
Alaska Airlines
Mon 8/317:30 pm
DEN
- BOI
1 stop14h 22m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:10 am
BOI
- COS
1 stop4h 50m
Southwest
Mon 9/144:20 pm
COS
- BOI
2 stops7h 20m
Southwest
Deal found 7/22![Southwest logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:00 am
BOI
- DEN
Nonstop2h 10m
United Airlines
Sun 10/117:40 am
DEN
- BOI
Nonstop1h 54m
United Airlines
Deal found 7/22![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:45 pm
BOI
- COS
1 stop3h 43m
Delta
Sun 8/166:16 pm
COS
- BOI
1 stop5h 43m
Delta
Deal found 7/20![Delta logo]()
$394
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:30 am
BOI
- DEN
Nonstop1h 50m
Southwest
Mon 8/174:40 pm
DEN
- BOI
2 stops7h 15m
Southwest
Deal found 7/18![Southwest logo]()
$313
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:30 am
BOI
- COS
1 stop6h 47m
United Airlines
Sat 8/227:00 am
COS
- BOI
1 stop6h 38m
United Airlines
Deal found 7/18![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:25 am
BOI
- COS
2 stops9h 15m
Southwest
Sat 8/295:45 pm
COS
- BOI
1 stop3h 45m
Southwest
Deal found 7/20![Southwest logo]()
$322
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:10 am
BOI
- COS
1 stop4h 50m
Southwest
Sat 8/2211:35 am
COS
- BOI
2 stops7h 00m
Southwest
Deal found 7/18![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:30 pm
BOI
- COS
1 stop4h 36m
United Airlines
Sat 10/245:30 am
COS
- BOI
1 stop4h 03m
United Airlines
Deal found 7/21![United Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:45 am
BOI
- COS
1 stop4h 25m
Southwest
Mon 8/105:10 pm
COS
- BOI
1 stop6h 45m
Southwest
Deal found 7/18![Southwest logo]()
$329
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:25 pm
BOI
- MTJ
1 stop5h 00m
Southwest
Fri 8/219:10 am
MTJ
- BOI
2 stops10h 00m
Southwest
Deal found 7/20![Southwest logo]()
$371
Last-minute flights from Boise to ColoradoDiscover last-minute flight deals from Boise to Colorado. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Colorado. Data last updated July 23, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 8/910:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/19![Frontier logo]()
$218
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1310:50 am
BOI
- DEN
1 stop7h 55m
Southwest
Sat 8/159:05 am
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/21![Southwest logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/134:35 pm
BOI
- DEN
1 stop7h 24m
Alaska Airlines
Sat 8/156:02 am
DEN
- BOI
1 stop6h 45m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Tue 8/182:00 pm
DEN
- BOI
2 stops8h 25m
Southwest
Deal found 7/21![Southwest logo]()
$223
This Expedia deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Sat 8/156:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Mon 8/248:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$228
This Priceline deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:23 pm
BOI
- DEN
1 stop5h 17m
Multiple Airlines
Tue 8/1810:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$203
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:45 pm
BOI
- DEN
1 stop7h 25m
Southwest
Tue 8/182:00 pm
DEN
- BOI
2 stops8h 25m
Southwest
Deal found 7/22![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
BOI
- COS
1 stop5h 30m
United Airlines
Tue 8/255:30 am
COS
- BOI
1 stop4h 05m
United Airlines
Deal found 7/20![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:25 am
BOI
- COS
2 stops9h 15m
Southwest
Tue 8/257:20 am
COS
- BOI
1 stop3h 35m
Southwest
Deal found 7/20![Southwest logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Thu 8/277:30 am
DEN
- BOI
1 stop8h 58m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:50 am
BOI
- DEN
2 stops9h 20m
Southwest
Mon 8/248:40 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/22![Southwest logo]()
$212
One-way flights from Boise to ColoradoSearch for one-way flight options from Boise to Colorado. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from Boise to Colorado. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/22![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:52 pm
BOI
- DEN
1 stop8h 23m
Frontier
Deal found 7/19![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Deal found 7/19![Frontier logo]()
$95
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:44 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Deal found 7/22![United Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:52 pm
BOI
- DEN
1 stop19h 44m
Frontier
Deal found 7/18![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:23 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Deal found 7/18![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:52 pm
BOI
- DEN
1 stop21h 52m
Frontier
Deal found 7/22![Frontier logo]()
$107
This Expedia deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1812:23 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Deal found 7/19![Frontier logo]()
$108
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Deal found 7/22![Southwest logo]()
$109
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
BOI
- DEN
2 stops7h 40m
Southwest
Deal found 7/21![Southwest logo]()
$114
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:44 pm
BOI
- COS
1 stop4h 12m
United Airlines
Deal found 7/21![United Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:45 pm
BOI
- COS
1 stop3h 43m
Delta
Deal found 7/21![Delta logo]()
$157
Find flight deals from Boise to Colorado
Keep the following information in mind while searching for Boise to Colorado flight deals. Data was last updated July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Kiwi.com) |
One-way from | $54 (Frontier) |
Popular in | April |
Cheapest in | October |
Average price | $318 |
Good round-trip deal | $371 or less |
Good one-way deal | $206 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Colorado that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Boise to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/13
9:05 am-3:35 pm
2 stops6h 30m
Denver Intl
Tue 8/18
1:05 pm-10:15 pm
2 stops9h 10m
$223
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 8/14
8:00 pm-10:33 am
1 stop14h 33m
Denver Intl
Tue 8/18
7:05 pm-11:48 pm
1 stop4h 43m
$257
Quickest round-trip
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 8/14
2:55 pm-4:45 pm
Nonstop1h 50m
Denver Intl
Tue 8/18
9:05 am-10:55 am
Nonstop1h 50m
$262
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/27
5:00 am-7:10 am
Nonstop2h 10m
Denver Intl
Mon 8/31
7:40 am-9:35 am
Nonstop1h 55m
$277
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 8/17
5:44 pm-7:45 pm
Nonstop2h 01m
Denver Intl
Fri 8/21
7:37 pm-9:37 pm
Nonstop2h 00m
$288
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 9/4
2:55 pm-4:45 pm
Nonstop1h 50m
Denver Intl
Mon 9/7
6:25 am-1:15 pm
1 stop6h 50m
$289
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 8/17
2:44 pm-4:45 pm
Nonstop2h 01m
Denver Intl
Mon 8/24
7:37 pm-9:37 pm
Nonstop2h 00m
$290
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 8/11
8:00 pm-10:33 am
1 stop14h 33m
Denver Intl
Tue 8/18
7:05 pm-11:48 pm
1 stop4h 43m
$294
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/27
1:32 pm-11:56 pm
2 stops10h 24m
Denver Intl
Mon 8/31
7:30 pm-9:52 am
1 stop14h 22m
$300
BoiseColorado Springs
BOI - COS
BOICOS
Boise Air Term. Gowen Fld
Sat 9/12
6:10 am-11:00 am
1 stop4h 50m
Colorado Springs
Mon 9/14
4:20 pm-11:40 pm
2 stops7h 20m
$308
Showing 1-10 of 38 resultsSorted by cheapest first
Best time to book a flight from Boise to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Boise with our price prediction graph.
BOI-DEN
BOI-COS
BOI-MTJ
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boise to Colorado
BOI-USCO
BOI-DEN
BOI-COS
BOI-MTJ
What is the cheapest month to book a flight from Boise to Colorado?
Currently, October is the cheapest month in which you can book a flight from Boise to Colorado (average of $218). Flying from Boise to Colorado in April is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOI to CO?
Find hourly flight availability from Boise to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.
It’s optimal to fly from Boise to Colorado in the evening. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the morning.
Weekly flight availability from Boise to Colorado
Explore weekly flight availability from Boise to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 23, 2026.
The most flights from BOI to USCO are scheduled on a Monday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from Boise to Colorado?
Airfare is typical for this route at the moment.
Boise to Colorado flights typically cost between $192 and $374 in September.The cheapest round-trip price found within the last 5 days was $200 on Frontier (Sep 17-Sep 20).
How far ahead should I book a flight from Boise to Colorado?
Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boise to Colorado. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated July 23, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Boise to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
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Complete your trip
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Boise and Colorado flights
Browse other Boise and Colorado flight options. Last updated on July 23, 2026.
Popular flight searches
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Boise to Colorado flights
Consider these flights traveling from Boise to Colorado.
Top 4 airlines flying from Boise to Colorado
Discover the top 4 airlines that operate flights from Boise to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$53 | Average$147 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$298 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$193 | Average$398 | FlexibilityNo cancel fee | On-time63% |